2K acrylic urethane primer is a premium lead/chrome-free two component acrylic urethane primer surfacer. 6561/6564 provides exceptional fill and build and provides a base which yields excellent topcoat hold out, gloss and DOI (distinctness of image). 2K acrylic urethane primer sands easily wet or dry and can be directly top-coated with alkyd enamels, acrylic enamels, lacquers, acrylic urethane enamels and basecoat clearcoat systems.